22378563 has 12 divisors (see below), whose sum is σ = 33730320. Its totient is φ = 14270256.

The previous prime is 22378549. The next prime is 22378591. The reversal of 22378563 is 36587322.

22378563 is a `hidden beast` number, since 2 + 23 + 78 + 563 = 666.

It is not a de Polignac number, because 22378563 - 2⁴ = 22378547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22371563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53848 + ... + 54261.

It is an arithmetic number, because the mean of its divisors is an integer number (2810860).

Almost surely, 2^22378563 is an apocalyptic number.

22378563 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22378563 is a deficient number, since it is larger than the sum of its proper divisors (11351757).

22378563 is a wasteful number, since it uses less digits than its factorization.

22378563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108138 (or 108135 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 22378563 is about 4730.5985879168. The cubic root of 22378563 is about 281.8019962104.

The spelling of 22378563 in words is "twenty-two million, three hundred seventy-eight thousand, five hundred sixty-three".